Decreasing carbon method for producing high-purity silicon iron

A carbon reduction technology for ferrosilicon, which is applied in the field of carbon reduction for the production of high-purity ferrosilicon, can solve problems such as difficulty in carbon reduction, high production costs, and unstable product quality, and achieve easy control, low production costs, and high-quality products. Quality stable and reliable effect

Inactive Publication Date: 2009-10-07
QINGHAI WUTONG GROUP IND
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  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The production technology of high-purity ferrosilicon is the cutting-edge technology in the ferrosilicon production industry, and in the production of high-purity ferrosilicon, the carbon content requirements in high-purity ferrosilicon products used in the production of various high-quality steel are getting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: add the dolomite that 0.9kg particle size is 2mm by 100kg silica charge in the batching, the industrial soda ash of 0.6kg, the iron fine powder that the particle size of 1.8kg is 1mm, the industrial sodium chloride of 0.3kg, after batching, four kinds After the materials are mixed, they are directly added to the high-purity ferrosilicon smelting furnace. They will form high-melting slag in the smelting furnace. Carbon reduction effect.

Embodiment 2

[0007] Embodiment 2: in the batching, add 1.1kg particle size to be the dolomite of 4.95mm by 100kg silica charge, the industrial soda ash of 0.4kg, the iron powder of 5mm in the particle size of 2.2kg, the industrial sodium chloride of 0.1kg carries out batching, after batching Mix these four materials and put them into the high-purity ferrosilicon smelting furnace, they will form high-melting point slag in the smelting furnace, these slags can remove the carbon in the high-purity ferrosilicon, and these slags are absorbing carbon After saturation, these slags are cleaned out of the furnace when ferrosilicon is produced.

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Abstract

The invention belongs to the technology field of producing high-purity silicon iron, especially relates to a decreasing carbon method for producing high-purity silicon iron. The feature of this method is indicated that adds the burden as 0.9-1.1kg dolomite with the graininess smaller than 5mm, 0.4-0.6kg industry soda ash, 1.8-2.2kg iron concentrate with the graininess 1-5mm, 0.1-0.3kg industry common salt into the 100kg dinas rock charging stock, and forms into high-melting dross at the antapical half of the furnace. The invention can effectively account for the problem of decreasing carbon in producing high-purity silicon iron, and has the advantages of simple to be carried out, easy to be controlled, low cost of manufacture, steady and reliable product quality.

Description

1. Technical field: [0001] The invention belongs to the technical field of high-purity ferrosilicon production, in particular to a carbon reduction method for producing high-purity ferrosilicon. 2. Technical background: [0002] The production technology of high-purity ferrosilicon is the cutting-edge technology in the ferrosilicon production industry, and in the production of high-purity ferrosilicon, the carbon content requirements in high-purity ferrosilicon products used in the production of various high-quality steel are getting higher and higher. For example, the existing high-purity ferrosilicon has several specifications such as C<0.03%, C<0.015%, C<0.010%, and ultra-low carbon C<0.007%, but it is difficult to reduce carbon by using the existing carbon reduction methods. High production costs, unstable product quality and other defects. 3. Contents of the invention: [0003] The purpose of the present invention is to address the above-mentioned deficie...

Claims

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Application Information

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IPC IPC(8): C21C7/068
Inventor 王启民齐中勇霍生福霍东林罗永帮
Owner QINGHAI WUTONG GROUP IND
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